diff --git a/Work/bounce.py b/Work/bounce.py
index 3660ddd82..3a5e99afa 100644
--- a/Work/bounce.py
+++ b/Work/bounce.py
@@ -1,3 +1,11 @@
 # bounce.py
 #
 # Exercise 1.5
+
+height = 100 # Meters
+bounce_count = 1
+
+while bounce_count <= 10:
+    height *=  0.6
+    print(bounce_count, round(height, 4))
+    bounce_count += 1
diff --git a/Work/mortgage.py b/Work/mortgage.py
index d527314e3..34f7c4c17 100644
--- a/Work/mortgage.py
+++ b/Work/mortgage.py
@@ -1,3 +1,25 @@
 # mortgage.py
 #
 # Exercise 1.7
+
+principal = 500000.0
+rate = 0.05
+payment = 2684.11
+extra_payment = 1000.0
+total_paid = 0.0
+month = 0
+
+while principal > 0:
+    month = month + 1
+
+    if month <= 12:
+        principal = principal * (1+rate/12) - (payment + extra_payment)
+        total_paid = total_paid + payment + extra_payment
+    else:
+        principal = principal * (1+rate/12) - payment
+        total_paid = total_paid + payment
+
+
+
+print('Total paid', round(total_paid, 1))
+print('Months required', month)
diff --git a/Work/sears.py b/Work/sears.py
new file mode 100644
index 000000000..df968fff7
--- /dev/null
+++ b/Work/sears.py
@@ -0,0 +1,15 @@
+# sears.py
+
+bill_thickness = 0.11 * 0.001    # Meters (0.11 mm)
+sears_height   = 442             # Height (meters)
+num_bills      = 1
+day            = 1
+
+while num_bills * bill_thickness < sears_height:
+    print(day, num_bills, num_bills * bill_thickness)
+    day = day + 1
+    num_bills = num_bills * 2
+
+print('Number of days', day)
+print('Number of bills', num_bills)
+print('Final height', num_bills * bill_thickness)